I have had two WordPress blogs hacked into in the past. That was at a time when I was doing very little internet marketing, and until I found time to address the situation (months later), these sites were penalised in the search engines. They were not removed, but the rankings were reduced.
secure your wordpress website Watch out form entries. You can usethe data to be processed by Regexp . You can even define preloaded variables as type data in the form of checkboxes, radiobuttons etc..
The more powerful approach, and the one I recommend, is to use one of the creation and storage plugins available go to this website on your browser. I believe after a free trial period, you have to pay for it, although Lots of people like RoboForm. I use the free version of More about the author Lastpass, and I recommend it for those who use Internet Explorer or Firefox. That will generate passwords for you.
Is to delete the default administrator account. This is important because if you don't do it, malicious user know a user name that they could my sources try to crack.
You could get an SSL Encyption Security for your WordPress blogs. The SSL Security makes secure and encrypted communications with your blog. So that all transactions are recorded, you may also keep history of communication and the all of the cookies. Be certain that all your sites get SSL security for protection.
Software: If you've installed scripts that are free like Wordpress, search Google for'wordpress security'. You will get many tips on how best to create your WP blog secure.